About: http://webisa.webdatacommons.org/408971946

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The head presents a socket, e.g. a hexagonal socket with six flats, thus enabling the cam 130 to be rotated about its axis by means of a suitable tool such as a key.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com